21290724

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1$

素因数の和:194

約数の個数: 144

約数和(自身を含む): 67919488

約数和(自身を除く): 46628764

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 52, 63, 67, 78, 84, 91, 97, 117, 126, 134, 156, 182, 194, 201, 234, 252, 268, 273, 291, 364, 388, 402, 468, 469, 546, 582, 603, 679, 804, 819, 871, 873, 938, 1092, 1164, 1206, 1261, 1358, 1407, 1638, 1742, 1746, 1876, 2037, 2412, 2522, 2613, 2716, 2814, 3276, 3484, 3492, 3783, 4074, 4221, 5044, 5226, 5628, 6097, 6111, 6499, 7566, 7839, 8148, 8442, 8827, 10452, 11349, 12194, 12222, 12998, 15132, 15678, 16884, 17654, 18291, 19497, 22698, 24388, 24444, 25996, 26481, 31356, 35308, 36582, 38994, 45396, 45493, 52962, 54873, 58491, 73164, 77988, 79443, 84487, 90986, 105924, 109746, 116982, 136479, 158886, 168974, 181972, 219492, 233964, 253461, 272958, 317772, 337948, 409437, 506922, 545916, 591409, 760383, 818874, 1013844, 1182818, 1520766, 1637748, 1774227, 2365636, 3041532, 3548454, 5322681, 7096908, 10645362, 21290724]

約数ペア:

[(1, 21290724), (2, 10645362), (3, 7096908), (4, 5322681), (6, 3548454), (7, 3041532), (9, 2365636), (12, 1774227), (13, 1637748), (14, 1520766), (18, 1182818), (21, 1013844), (26, 818874), (28, 760383), (36, 591409), (39, 545916), (42, 506922), (52, 409437), (63, 337948), (67, 317772), (78, 272958), (84, 253461), (91, 233964), (97, 219492), (117, 181972), (126, 168974), (134, 158886), (156, 136479), (182, 116982), (194, 109746), (201, 105924), (234, 90986), (252, 84487), (268, 79443), (273, 77988), (291, 73164), (364, 58491), (388, 54873), (402, 52962), (468, 45493), (469, 45396), (546, 38994), (582, 36582), (603, 35308), (679, 31356), (804, 26481), (819, 25996), (871, 24444), (873, 24388), (938, 22698), (1092, 19497), (1164, 18291), (1206, 17654), (1261, 16884), (1358, 15678), (1407, 15132), (1638, 12998), (1742, 12222), (1746, 12194), (1876, 11349), (2037, 10452), (2412, 8827), (2522, 8442), (2613, 8148), (2716, 7839), (2814, 7566), (3276, 6499), (3484, 6111), (3492, 6097), (3783, 5628), (4074, 5226), (4221, 5044)]